Volume 7, Book 62, Number 141:
Narrated Anas:
It is the Prophet’s tradition that if someone marries a virgin and he has already a matron wife then
he should stay for seven days with her (the virgin) and then by turns; and if someone marries a mat –
ron and he has already a virgin wife then he should stay with her (the matron) for three days, and
then by turns.