Is sighing deeply ('Tarah' - expression of distress) during prayer disliked?
Chapter on what invalidates the prayer if omitted intentionally or forgetfully
Al-Mughni
Book of Prayer
Primary text
Ahmad disliked sighing deeply in prayer unless due to severe distress. Ishaq agreed with this. Atta, Abu Abd al-Rahman, Muslim ibn Yasar, and Malik also disliked it.
Supporting text
Ibn Sirin, Mujahid, Al-Hasan, and Aisha bint Saad permitted it.