Hadith 101
Narrated Abu Hurairah: The Messenger of Allah ﷺ said: The prayer of a person who does not perform ablution is not valid, and the ablution of a person who does not mention the name of Allah (in the beginning) is not valid.
Hadith 1300
Narrated Kab ibn Ujrah: The Prophet ﷺ came to the mosque of Banu AbdulAshhal. He prayed the sunset prayer there. When they finished the prayer, he saw them praying the supererogatory prayer after it. He said: This is the prayer to be offered in the houses.
Hadith 2345
Narrated Abu Hurairah: The Prophet ﷺ as saying: How good is the believers meal of dates shortly before dawn.