Quran 12:15 (Was Yousuf A.S Thrown Into A Well)?
The verse 19 makes it clear that it was a well in which Yusuf was thrown. وَ جَآءَتۡ سَیَّارَۃٌ فَاَرۡسَلُوۡا وَارِدَہُمۡ فَاَدۡلٰی دَلۡوَہٗ ؕ قَالَ یٰبُشۡرٰی ہٰذَا غُلٰمٌ ؕ وَ اَسَرُّوۡہُ بِضَاعَۃً ؕ وَ اللّٰہُ عَلِیۡمٌۢ بِمَا یَعۡمَلُوۡنَ On the other hand, a caravan arrived and sent its water-bearer. And, he slid his bucket [in the well; then seeing Joseph cried:] “Glad tidings be delivered; this is a boy.” Thus, they [took him out and] hid him thinking him to be a prized possession.[26] And God was fully aware of whatever they were doing.