Tafseer Ibn Kathir of THAAHAA [18]

قَالَ هِيَ عَصَايَ أَتَوَكَّأُ عَلَيْهَا وَأَهُشُّ بِهَا عَلَى غَنَمِي وَلِيَ فِيهَا مَآرِبُ أُخْرَى

He said, "It is my staff; I lean upon it, and I bring down leaves for my sheep and I have therein other uses."