Sunan Abi Dawud 2063
سنن أبي داود#2063SahihA’ishah reported “The Apostle of Allaah(ﷺ) as saying One or two sucks does not make marriage unlawful”
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautHasan Sahih
Zubair Ali ZaiSahih Bukhari (1450)
In-book reference: 12:18