´Ma'mar narrated from Ibn Tawus, from his father, from Hujr Al-Madari, from Zaid bin Thabit, from Prophet, who said:` "'Umra (a gift given for life) is permissible."
Hadith ReferenceSunan an-Nasa'i / The Book of ar-Ruqba / Hadith: 3747
Hadith Gradingالألبانی:صحيح الإسناد | زبیر علی زئی:إسناده صحيح