Is it true that if a muqtadi gives luqma to the imam (during Salah) and the imam does not take the luqma (instead continues reading), the muqtadi's Salah will break?
In the Name of Allah, the Most Gracious, the Most Merciful.
No, it is not true. The salat of such a muqtadi will not break.
(Fatawa Mahmudiya: 6/594)
And Allah knows best.
Mufti Faizal Riza
Darul Ifta Australia