The Messenger of Allah ﷺ as saying: No one withholds goods till their price rises but a sinner. I said to Sa'id (b. al-Musayyab): You withhold goods till their price rises. He said: Ma'mar used to withhold goods till their price rose. Abu Dawud said: I asked Ahmad (b. Hanbal): What is hoarding (hukrah) ? He replied: That on which people live. Abu Dawud said: Al-Auza'i said: A muhtakir (one who hoards) is one who withholds supply of goods in the market.  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ يَحْتَكِرُ إِلاَّ خَاطِئٌ فَقُلْتُ لِسَعِيدٍ فَإِنَّكَ تَحْتَكِرُ قَالَ وَمَعْمَرٌ كَانَ يَحْتَكِرُ  

Hoarding does not apply to dried dates. Ibn al-Muthanna said that he (Yahya b. Fayyad) reported on the authority of al-Hasan. We (Ibn al-Muthanna) said to him (Yahya): Do not say: "on the authority of al-Hasan." Abu Dawud said: This tradition according to us is false. Abu Dawud said: Sa'id b. al-Musayyab used to hoard kernel, fodder, and seeds. Abu Dawud said: I heard Ahmad b. Yunus say: I asked Sufyan about hoarding fodder. He replied: They (the people in the past) disapproved of hoarding. I asked Abu Bakr b. 'Ayyash (about it). He replied: Hoard it.