Tafsir Al-Jalalayn: Aal-i-Imraan, Ayah 173

Those to whom alladhīna substitutes for the previous alladhīna ‘those who’ or an adjectival qualification of it people that is Nu‘aym b. Mas‘ūd al-Ashja‘ī said ‘The people Abū Sufyān and his companions have gathered their multitudes against you in order to exterminate you therefore fear them’ and do not go out to encounter them; but that saying increased them in faith in their belief in God and in certainty and they said ‘God is sufficient for us He will deal fully for us with their affair; an excellent Guardian is He’ the One to whom the matter is entrusted. They thus set out with the Prophet s and arrived at the market-fair of Badr but God had cast terror into the hearts of Abū Sufyān and his followers and so they did not turn up. They the believers had merchandise with them and so they traded and made profits. God exalted be He says