Jabir bin Abdullah reported,

The Messenger of Allah ﷺ sent me on an errand. When I returned to him, he was on his mount. I greeted him with salam, but he did not return my greeting. I noticed he was performing ruku and sujud, so I withdrew from him.Afterwards he asked me, "What did you do regarding your errand?"I replied, "I did such and such."He then said, "Nothing prevented me from returning your greeting except that I was praying."

Ahmad 14788

Sahih

حدثنا عبد الصمد وكثير بن هشام قالا حدثنا هشام عن أبي الزبير

عن جابر قال

بعثني رسول الله ﷺ في حاجة له فرجعت إليه وهو على راحلته فسلمت عليه فلم يرد علي ورأيته يركع ويسجد فتنحيت عنه ثم قال لي ما صنعت في حاجتك فقلت صنعت كذا وكذا فقال أما إنه لم يمنعني أن أرد عليك إلا أني كنت أصلي

أحمد 14788صحيح
Contents
Reference
Commentary
Ayat
Collection
Musnad Ahmad
Book
Jabir bin Abdullah
Numbering
Darussalam 14788
Ahmad 14788