When a Person Sitting while Performing Bends too Much in Ruku

Q: Salaah-706: If a person sitting and performing salaah bends so much in Ruku that it resembles the Sajdah posture, will the Ruku be valid?

Answer: While sitting and performing Salaah, a person needs to bend in Ruku only as much as his forehead comes opposite his thighs. If he bends any more or less. the Ruku will still be valid. And Allaah knows best what is most correct.

Fatawa Rahimiyyah vol.2