‏النكاح : Hadeeth No:3422 'Amra reported that she beard 'A'isha (Allaah he pleased with her) discussing fosterage which (makes marriage) unlawful; and she ('A'isha) said: There was revealed in the Holy Qur'an ten clear sucklings, and then five clear (sucklings)....

‏الإمارة : Hadeeth No:4564 The same tradition has been transmitted by a different chain of narrators....