Simak reported,

Numan bin Bashir gave a sermon and said, "Allah is more delighted by the repentance of His servant than a man who loaded his provisions and water-skins on his camel, then traveled until he reached a barren stretch of land. When the time for the midday rest overtook him, he dismounted and lay down to rest beneath a tree. Sleep overcame him, and his camel slipped away. He woke up and ran to the top of a rise, but saw nothing. Then he ran to a second rise, but saw nothing. Then he ran to a third rise, but saw nothing. So he came back to the spot where he had been resting, and while he sat there, suddenly his camel came walking up until it placed its halter in his hand. Allah is more delighted by the repentance of His servant than this man was when he found his camel just as it had been."Simak said, Shaybi claimed that Numan traced this hadith back to the Prophet ﷺ, but as for me, I did not hear it from him that way.

Muslim 6958

Sahih

حدثنا عبيد الله بن معاذ العنبري حدثنا أبي حدثنا أبو يونس

عن سماك قال

خطب النعمان بن بشير فقال لله أشد فرحا بتوبة عبده من رجل حمل زاده ومزاده على بعير ثم سار حتى كان بفلاة من الأرض فأدركته القائلة فنزل فقال تحت شجرة فغلبته عينه وانسل بعيره فاستيقظ فسعى شرفا فلم ير شيئا ثم سعى شرفا ثانيا فلم ير شيئا ثم سعى شرفا ثالثا فلم ير شيئا فأقبل حتى أتى مكانه الذي قال فيه فبينما هو قاعد إذ جاءه بعيره يمشي حتى وضع خطامه في يده فلله أشد فرحا بتوبة العبد من هذا حين وجد بعيره على حاله قال سماك فزعم الشعبي أن النعمان رفع هذا الحديث إلى النبي ﷺ وأما أنا فلم أسمعه

مسلم 6958صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Muslim
Book
Tawba
Chapter
Urging repentance and rejoicing in it
Numbering
Darussalam 6958
Muslim 6958