It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) concerning the words of Allah Almighty, "And not a leaf falls" [Surah al-An'am: 59], that he said: "Whether on land or at sea, there is no tree (on the face of the earth) except that an angel is appointed over it who records every single leaf that falls from it."
Imam Ibn Jarir al-Tabari recorded this athar in his Tafsir, and other hadith scholars in their books, through Hassan al-Fihri.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب التفسير / 3600
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :فيه من لم أجد له ترجمة، وهو حسان الفهري. » «أخرجه سنن سعيد بن منصور برقم: 881»