Hadith: The Prophet (may Allah's peace and blessings be upon him) used to stand by the trunk of a date-palm tree while delivering the sermon. When a pulpit was placed in the mosque, we heard the trunk crying out like a pregnant she-camel until the Prophet (may Allah's peace and blessings be upon him) came down from the pulpit and placed his hand over it and it became quiet.

عن جابر بن عبد الله رضي الله عنهما قال: كان جِذْعٌ يقوم إليه النبي صلى الله عليه وسلم يعني في الخطبة - فلما وُضعَ المنبر سمعنا للجِذْعِ مثل صوت العِشَارِ، حتى نزل النبي صلى الله عليه وسلم فوضع يده عليه فَسَكَنَ. وفي رواية: فلما كان يوم الجمعة قعد النبي صلى الله عليه وسلم على المنبر، فصاحت النخلة التي كان يخطب عندها حتى كادت أن تَنْشَقُّ، وفي رواية: فصاحت صِيَاحَ الصبي، فنزل النبي صلى الله عليه وسلم حتى أخذها فَضَمَّها إليه، فجعلت تَئِنُّ أَنِينَ الصبي الذي يُسَكَّتُ حتى اسْتَقَرَّتْ، قال: «بَكَتْ على ما كانت تسمع من الذِّكْرِ».
[صحيح] - [رواه البخاري]

Jābir ibn ‘Abdullāh (may Allah be pleased with him) reported: The Prophet (may Allah's peace and blessings be upon him) used to stand by the trunk of a date-palm tree while delivering the sermon. When a pulpit was placed in the mosque, we heard the trunk crying out like a pregnant she-camel until the Prophet (may Allah's peace and blessings be upon him) came down from the pulpit and placed his hand over it and it became quiet. In another narration: "On Friday, the Prophet (may Allah's peace and blessings be upon him) sat on the pulpit, so the date palm tree that he used to stand by while delivering the sermon cried out until it almost split asunder." In a third narration: "... so it cried like a child, and the Prophet (may Allah's peace and blessings be upon him) descended (from the pulpit) and embraced it while it continued moaning like a child being quietened until it calmed down. He said: 'It was crying for (missing) what it used to hear of Dhikr near it.’"
[Authentic hadith] - [Narrated by Bukhari]

Explanation

The Prophet (may Allah's peace and blessings be upon him) took a trunk as a pulpit, and when he replaced it, he heard the sound and crying of that trunk over the Dhikr it used to hear. So, the Prophet descended and put his hand over it, and it calmed as a result. In another narration: "He descended and took it in his arms, and this took place during the Friday sermon."