Sahih Muslim Book 10, Hadith Number 3770.

Chapter : Merit of giving respite to one who is in straitened circumstances.

Anas b. Malik (Allah be pleased with him) reported that Allah’s Apostle (may peace be upon him) visited the date-palms of Umm Mubashshir (Allah be pleased with her), a lady from the Ansar, and said: Who planted this palm-a Muslim or an unbelievers The rest of the hadith is the same.