Abu Hurairah reported,

The Prophet ﷺ said, "When the prayer has been called with the iqamah, there is no prayer except the obligatory one."

Muslim 1645

Sahih

و حدثنيه محمد بن حاتم وابن رافع قالا حدثنا شبابة حدثني ورقاء بهذا الإسناد

مسلم 1645صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Travelers' prayer and its shortening
Chapter
Dislike of starting a voluntary prayer after the muezzin begins
Numbering
Darussalam 1645
Muslim 1645