Matlab bin Abdullah Makhzumi says that once I presented myself before Hazrat Umm Salamah, and she said, "Son, shall I not tell you a hadith which I heard from the Prophet (peace be upon him)?" I replied, "Mother, why not?" She said, "I heard the Prophet (peace be upon him) say: Whoever spends on his two daughters, or sisters, or close female relatives with the intention of reward, until by the grace of Allah they become independent, or he continues to provide for them, then they will become a barrier for him against the fire of Hell."