Reference for Kiddushin 74:1

ביאה ומושב כתיב בהו ה"ק ללמד שכל מקום שנאמר ביאה ומושב אינו אלא לאחר ירושה וישיבה דברי ר' ישמעאל

both 'coming' and 'dwelling' are written!<span class="x" onmousemove="('comment',' How then can he infer as above? Possibly 'dwelling' alone denotes extension, in all places, yet here it implies limitation, because 'coming' too is mentioned.');">¹</span> - It means thus: This is to teach that wherever 'coming' and 'dwelling' are stated, it means only after taking possession and settling down: that is R'Ishmael's opinion.

Jastrow