It was narrated that ‘Abd-Allah ibn ‘Umar (radi Allahu anhu) said that ‘Umar (radi Allahu anhu) took a brocade cloak that was for sale in the market and brought it to the Messenger of Allah (sal Allahu alaihi wa sallam), and said, “O Messenger of Allah, buy this and adorn yourself with it for Eid and for receiving the delegations.” The Messenger of Allah (sal Allahu alaihi wa sallam) said to him, “Rather this is the dress of one who has no share (of piety or of reward in the Hereafter)…” [Sahih al-Bukhari]
The Prophet (sal Allahu alaihi wa sallam) agreed with ‘Umar (radi Allahu anhu) on the idea of adorning oneself for Eid, but he denounced him for choosing this cloak because it was made of silk.
It was narrated that Jaabir (radi Allahu anhu) said: The Prophet (sal Allahu alaihi wa sallam) had a cloak which he would wear on the two Eids and on Fridays. [Saheeh Ibn Khuzaymah, 1756]
Al-Bayhaqi (may Allah have mercy on him) narrated with a sahih isnaad that Ibn ‘Umar (radi Allahu anhu) used to wear his best clothes on Eid.
Prophet Muhammad (peace be upon him) addressed the Muslims on the last day of the month preceding Ramadan and said:
“People, a great blessed month has come upon you, a month containing Laylat al-Qadr (the Night of Power) which is better than a thousand months. Allah has made fasting during it an obligation, and steadfastly observing its nights in worship a voluntary act. Whoever undertakes an act of obedience to Allah during this month with a righteous deed, it is as if he has performed an obligatory act at other times; and whoever performs an obligatory act during it is as one who performed seventy obligations at other times. It is the month of patience, and the reward for patience is Paradise. It is the month of goodwill, during which provisions are multiplied. Whoever feeds a fasting person will be compensated with forgiveness of sins and salvation of his soul from Hell. He will also receive a reward equal to that of the person he feeds, without causing him any reduction (in his good deeds).”
(The Companions) said:
“Not all of us can find something to feed a fasting person.”
The Prophet (peace be upon him) replied:
“Allah gives this reward to whoever feeds a fasting person even with just a taste of milk or dates, or a drink of water. Whoever quenches the thirst of a fasting person, Allah the Almighty makes him drink from my pond such that he will never feel thirsty again until he enters Paradise. It is a month whose beginning is mercy, whose middle is forgiveness and whose end is emancipation from Hell.”