Sahih Muslim | Book 8 | Chapter 19

Narrated by Jabir (Allah be pleased with him) declared that the Jews
Jabir (Allah be pleased with him) declared that the Jews used to say: When a man has

intercourse with his wife through the vagina but being on her back, the child will have squint, so the verse came down: "Your wives are your tilth; go then unto your tilth as you may desire"(ii. 223)

Narrated by Jabir (b. Abdullah) (Allah be pleased with him)
Jabir (b. Abdullah) (Allah be pleased with him) reported that the Jews used to say that when one comes to one's wife through the vagina, but being on her back, and she becomes pregnant, the child has a squint. So the verse came down: "Your wives are your tilth; go then unto your tilth, as you may desire.

Narrated by Jabir
This hadith has been reported on the authority of Jabir through another chain of transmitters, but in the hadith transmitted on the authority of Zuhri there is an addition (of these words): "If he likes he may (have intercourse) being on the back or in front of her, but it should be through one opening (vagina).