Abu Hurairah reported,

The Messenger of Allah ﷺ led us in one of the two afternoon prayers. Ibn Sirin said, "Abu Hurairah named which prayer it was, but I have forgotten."He led us in two rakahs and then gave the salam. He stood up and walked to a piece of wood placed across the mosque and leaned on it as though he were angry. He placed his right hand over his left, interlocked his fingers, and rested his right cheek on the back of his left hand. Those in a hurry left through the doors of the mosque, saying, "The prayer has been shortened."Among the people were Abu Bakr and Umar, but they were too in awe of him to speak to him. Also among the people was a man with long arms called Dhul-Yadayn.He asked, "Messenger of Allah, have you forgotten, or has the prayer been shortened?"He replied, "I have not forgotten, and it has not been shortened."He said, "Is it as Dhul-Yadayn says?"The people answered, "Yes."So he stepped forward and prayed what he had omitted, then gave the salam. Then he said the takbir and prostrated like his usual prostration or longer, then raised his head and said the takbir. Then he said the takbir again and prostrated like his usual prostration or longer, then raised his head and said the takbir.The people would sometimes ask him, "Then did he give the salam?" He would say, "I have been informed that Imran bin Husayn said, 'Then he gave the salam.'"

Bukhari 482

Sahih

حدثنا إسحاق قال حدثنا النضر بن شميل أخبرنا ابن عون عن ابن سيرين

عن أبي هريرة قال

صلى بنا رسول الله ﷺ إحدى صلاتي العشي قال ابن سيرين سماها أبو هريرة ولكن نسيت أنا قال فصلى بنا ركعتين ثم سلم فقام إلى خشبة معروضة في المسجد فاتكأ عليها كأنه غضبان ووضع يده اليمنى على اليسرى وشبك بين أصابعه ووضع خده الأيمن على ظهر كفه اليسرى وخرجت السرعان من أبواب المسجد فقالوا قصرت الصلاة وفي القوم أبو بكر وعمر فهابا أن يكلماه وفي القوم رجل في يديه طول يقال له ذو اليدين قال يا رسول الله أنسيت أم قصرت الصلاة قال لم أنس ولم تقصر فقال أكما يقول ذو اليدين فقالوا نعم فتقدم فصلى ما ترك ثم سلم ثم كبر وسجد مثل سجوده أو أطول ثم رفع رأسه وكبر ثم كبر وسجد مثل سجوده أو أطول ثم رفع رأسه وكبر فربما سألوه ثم سلم فيقول نبئت أن عمران بن حصين قال ثم سلم

البخاري 482صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Prayer
Chapter
Interlocking fingers in the masjid and elsewhere
Numbering
Darussalam 482
Bukhari 482