Hadith 10:81
‘A’isha reported God’s Messenger as saying, “What is unlawful by reason of consanguinity is unlawful by reason of fosterage.” Bukhari transmitted it.
وَعَنْ عَائِشَةَ قَالَتْ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «يَحْرُمُ مِنَ الرَّضَاعَةِ مَا يحرم من الْولادَة» . رَوَاهُ البُخَارِيّ
Original Reference: Mishkat al-Masabih 3161