In a Hadīth in "Sahīh Muslim Collection", Abu Hurayrah (may Allah be pleased with him) reported: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "O people, indeed Allah is Tayyib (Good) and only accepts what is good; and indeed Allah commanded the believers with what He commanded the messengers. He says: {O messengers, eat from the lawful things and act righteously, for I am All-Knowing of what you do.} [Surat al-Mu’minūn: 51] He Almighty also says: {O you who believe, eat of the good things We have provided for you and be grateful to Allah if you truly worship Him alone.} [Surat al-Baqarah: 172]
Then, he mentioned: "A man who, having traveled far, disheveled and dusty, spreading out his hands to the sky saying: "O Lord, O Lord," while his food is unlawful, his drink is unlawful, his clothing is unlawful, and he has been nourished by unlawful means; so how can he be answered?"
The best of meanings..
Our Lord, glorified be He, is free from all deficiencies and defects and exalted above all plights and bad and evil things, given His all-inclusive Perfection and Majesty.
Our Lord, Glorified be He, is Exalted above any trait that is free from perfection or free from good praise, under any condition.
And our Lord, Glorified be He, is Tayyib in His Essence, for he is the most perfect of all essences and possesses the supreme and most excellent attributes.
And He, Exalted be He, is Tayyib in His names, for they denote the best meanings and noblest connotations.
And He, Glorified be He, is Tayyib in His actions, for they are completely true and right. He only does what is most perfect, most excellent, and best.
And He, Glorified be He, is Tayyib in His statements. From Him come true information and just commands and prohibitions.
And He, Glorified be He, is Tayyib in His predestined decrees, for He is Exalted above evil; "And evil is not attributed to You." [Narrated by Muslim]
And He is Tayyib in His Shar‘i rulings, for they serve the interests of people.
And He is Tayyib in His punitive judgments, for He rules with His justice and grace in this world and the Hereafter.
And Allah, Glorified be He, made Paradise good for the believers and gave it a pleasant smell. {and He will admit them to Paradise, which He has already made known to them.} [Surat Muhammad: 6]
Since Allah Almighty is absolutely Tayyib, he only accepts such deeds and words that are described as good; {To Him ascend good words, and righteous deeds raise them.} [Surat Fātir: 10] {O you who believe, spend in charity from the good things you have earned.} [Surat al-Baqarah: 267]
It is narrated by Al-Bukhāri that the Prophet (may Allah's peace and blessings be upon him) said: "Whoever gives in charity the value of a date that was lawfully earned—and Allah only accepts what is Tayyib (lawfully earned)—Almighty will accept it with His right Hand and grow it for him, just as one of you grows his foal, until it becomes like a mountain."
A believer is wholly Tayyib: in his heart, tongue, and body, with the Imān (faith) residing in his heart, the Dhikr pronounced by his tongue, and the righteous deeds performed by his body organs. This is the fruit of Imān. Hence, Allah Almighty derived for the good people a name from His beautiful names and a trait from His traits, saying: {and good women are for good men and good men for good women.} [Surat an-Nūr: 26]
And He guided His good (pious) servants: {They were guided to the Tayyib (the best) of words and they were guided to the praiseworthy path.}
[Surat al-Hajj: 24]
So, a believer is good and well-mannered. He does not get influenced by the folly of the foolish and does not renounce his generosity because of the stinginess of others. He meets the betrayal of friends with loyalty, and if he comes upon lewdness, he dons the garment of modesty. He extends his hands and gives when others refuse to give. He is forbearing and does not get affected by the rashness of the ignorant. He acts honestly when dishonesty becomes rampant, sincerely when sincere people decrease in number, and truthfully when there are a lot of liars. Essentially, he has good character and a good attitude, like palm trees.
Be, like palm trees, exalted high above spite When rocks are thrown at them, the best fruits fall from them.
Since the believer is good in this world, Allah honors him and admits him into the abode of the good people: {Peace be upon you; enter Paradise for what you used to do.} [Surat an-Nahl: 32]
{Allah has promised the believers, both men and women, gardens under which rivers flow, abiding therein forever, and splendid dwellings in the Gardens of Eternity, and Allah’s pleasure, which is the greatest of all; that is the supreme triumph.} [Surat at-Tawbah: 72]
O Allah, make us among Your good servants, to whom it will be said: {Enter Paradise; you will have no fear, nor will you grieve.} [Surat al-A‘rāf: 49] We ask You for beneficial knowledge, good sustenance, and righteous deeds.