Excused from the Battle of Tabuk
Except for the Battle of Tabuk, Hazrat Muhammad (ra) bin Maslamah took part in all the battles, including the Battle of Badr and Uhud. During the Battle of Tabuk, Hazrat Muhammad (ra) bin Maslamah took permission from the Holy Prophet (sa) to remain behind in Medina.
(Al-Isabah Fi Tamyeez Al-Sahabah, Vol. 6, pp. 28-29, Muhammad (ra) bin Maslamah, Dar-ul-Kutub al-Ilmiyyah, Beirut, 1995) (Sharh Zurqani, Vol. 6, p. 511, Hadith Bani Nadeer, Darul Kutub al-Ilmiyyah, Beirut, 1996)