Shaykh al-Islām Ibn Taymiyyah [d. 728] رحمه
الله
said:
“In the Fātiḥah there are 11 tashdīdahs )letters with ـّ ّ), in the Basmalah there are 3. Leaving off even one of these (not pronouncing it with a shaddah) will invalidate the prayer according to many of our companions, the way it would if a letter was to be left off. Because the mushaddad letter is made up of two letters, one has a sukoon and the other a vowel.”
Sharḥ
Umdat al-Fiqh 2/753
Al
Markaz As Salafi Leicestershire
@markazsalafileics
Note: Emphasis added
