Tafsir of Al-Baqarah 2:207

ومن الناس من يشري نفسه ابتغاء مرضات الله

And of mankind is he who would sell himself, seeking the pleasure of Allah. Ibn Abbas, Anas, Sa`id bin Musayyib, Abu Uthman An-Nahdi, Ikrimah and several other scholars said that; this Ayah was revealed about Suhayb bin Sinan Ar-Rumi. When Suhayb became a Muslim in Makkah and intended to migrate (to Al-Madinah), the people (Quraysh) prevented him from migrating with his money. They said that if he forfeits his property, he is free to migrate. He abandoned his money and preferred to migrate, and Allah revealed this Ayah about him. Umar bin Khattab and several other Companions met Suhayb close to the outskirts of Al-Madinah at Al-Harrah (flat lands with black stones). They said to him, "The trade has indeed been successful.'' He answered them, "You too, may Allah never allow your trade to fail. What is the matter?'' Umar told him that Allah has revealed this Ayah (2:207) about him. It was also reported that Allah's Messenger said, "The trade has been successful, O Suhayb!'' The meaning of the Ayah (2:207) includes every Mujahid in the way of Allah. Allah said in another Ayah:

إن الله اشترى من المومنين أنفسهم وأمولهم بٲن لهم الجنة يقتلون فى سبيل الله فيقتلون ويقتلون وعدا عليه حقا في التوراة واﻻنجيل والقرءان ومن أوفى بعهده من الله فاستبشروا ببيعكم الذى بايعتم به وذلك هو الفوز العظيم

Verily, Allah has purchased of the believers their lives and their properties for (the price) that theirs shall be the Paradise. They fight in Allah's cause, so they kill (others) and are killed. It is a promise in truth which is binding on Him in the Tawrah and the Injil and the Qur'an. And who is truer to his covenant than Allah Then rejoice in the bargain which you have concluded. That is the supreme success. (9:111) When Hisham bin Amr penetrated the lines of the enemy, some people criticized him. Umar bin Al-Khattab and Abu Hurayrah refuted them and recited this Ayah:

ومن الناس من يشري نفسه ابتغاء مرضات الله والله رووف بالعباد

And of mankind is he who would sell himself, seeking the pleasure of Allah. And Allah is full of kindness to (His) servants