Abu Dawud Book 8, Hadith Number 2672.

Narated By Jundub ibn Makith : The Apostle of Allah (PBUH) sent Abdullah ibn Ghalib al-Laythi along with a detachment and I was also with them. He ordered them to attach Banu al-Mulawwih from all sides at al-Kadid. So we went out and when we reached al-Kadid we met al-Harith ibn al-Barsa al-Laythi, and seized him. He said: I came with the intention of embracing Islam, and I came out to go to the Apostle of Allah (PBUH). We said: If you are a Muslim, there is no harm if we keep you in chains for a day and night; and if you are not, we shall tie you with chains. So we tied him with chains.