Hadith #4841 (Sunan Abi Dawud)
Book: General Behavior (Kitab Al-Adab)
Narrator(s): Abdullah bin Hmran عبد الله بن حمران, Abu Knanah al-Quraishi أبو كنانة القرشي, Abu Musa al-Asha'ari, Awf bin Abi Jamila al-A'rabi عوف بن أبي جميلة الأعرابي, Ishaq bin Ibrahim bin Muhammad إسحاق بن إبراهيم بن محمد, Ziyad bin Mkhraq زياد بن مخراق
Grade: Sahih

The Prophet (ﷺ) said: Every sermon which does not contain a tashahhud is like a hand cut off.

Source: https://parallelquran.com/hadith/sunan-abi-dawud-4841/