We were on a journey with the Messenger of Allah ﷺ, and I was riding behind him on his mount, when the Messenger of Allah ﷺ called out, "Suhayl bin Bayda!" He raised his voice, calling two or three times, and each time Suhayl answered him.The people heard the voice of the Messenger of Allah ﷺ and thought he wanted them, so those ahead of him halted and those behind him caught up. When they had all gathered, the Messenger of Allah ﷺ said, "Whoever testifies that there is no god but Allah, Allah forbids the Fire to him and grants him Paradise."
حدثنا هارون حدثنا ابن وهب قال حيوة حدثني ابن الهاد عن محمد يعني ابن إبراهيم عن سعيد بن الصلت عن سهيل ابن البيضاء من بني عبد الدار قال بينما نحن مع رسول الله ﷺ في سفر فذكر معناه
Its isnad is sahih. Haywa is Ibn Shurayh, the trustworthy and firmly reliable jurist of Egypt. He has been mentioned many times before, as has the rest of the isnad.