It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) intended to marry a woman, so he sent a woman to look at her and said to her: "Smell her cheeks and look at her heels." She came to them, and they said: "O mother of so-and-so! Shall we give you something to eat?" She said: "I will eat from the hand of such-and-such a woman." So she (the girl) went up to the upper room (to bring the food), and she looked at her heels. Then she said: "O my daughter! Kiss me." She was kissing her while this woman was smelling her cheek. Then she came back and informed (him).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 13501