Malik bn Dinar(RA) and a Zorostrian.
God is so close and will respond at the time of need.
In the early years of Islam, Allah raised a saint in the present day Iran, then the area was dominated with Zorostrians who worshipped fire as the manifestation of Ahura Mazda. The saint was Sheikh Malik bn Dinar(RA), in fact he was a pole(saintly figures very close to God and serve as source of Divine Guidance) and has many disciples who came and lived with him to learn Sufism and come close to Allah. In the same town where Malik bn Dinar(RA) lived, there lived two brothers worshipping fire and practicing Zorostrian religion. One of the was seventy years of birth and came from Zorostrian family. He asked the other, "Brother today we should test our decades of worship to this fire. It used to burn those who didn't have faith in it. But our decades of worship is it enough to guarantee us its burn? We should find out today." The other brother agreed and the first man placed his hand on the fire and was burnt, he quickly withdrew his hand. He was angry and frustrated, it means this fire doesn't even know my worship to it for decades, I don't think i'm on the right path. He left his brother and lamented I'm going to search for the right God to worship who will acknowledge my worship. Sooner, he saw Malik bn Dinar(RA) delivering lecture to his disciples, they were dressed in white and the speaker was handsome and handsomely dressed, this motivated him and went to listen. Good enough the lecture that day was on God, One Living and caring God who created the universe, he created fire. There is what the man wanted to hear, so he started pouring his questions to know about this God and the answers motivated and satisfied his thirst for looking for the right God, then he discovered fire is not God itself rather created by God. After hours of questions and answers the man accepted to become Muslim and receive the Islamic creed from Malik bn Dinar(RA). He brought his entire family they too accepted to become Muslim. He then bid Malik bn Dinar farewell saying he wanted to go back to his village. Malik bn Dinar(RA) asked whether he will stay with him, the man replied No, he will only be visiting him regularly, he will carry the message to his friends in his village so that they too will be saved.In the village, things started becoming hard for the man, his farm was damaged by flood, his business failed and three square meal becomes difficult in his house. He then went to the mosque offered cycles of prayer and said, "O God, I and my family have discovered You and came back to you stopping worship of fire which is not You. Now, the test you have put on me and my family is too much for my family, for me is OK it will never shake my faith in You. But my family I'm not sure they can withstand it, they may be tempted to think is the fire idol that is punishing them for leaving its worship and that will affect their faith in you. Rescue my family O! Living God" He slept in the mosque and after some hours he left for home. To his surprise on reaching home delicious dishes were served to him for his lunch and he know he left the house without a grain to cook. He asked his wife, how comes this food. She smiled and said a man came with many bags of food and ordered them to be given to us, he told me that you have visited the King today and in his palace you asked for these. The king instructed him to bring these to your house. As he was leaving I asked him what was his name and he said "Jibril(Gabriel)."