48 The Hebrew verb used here means “to argue; to dispute”; it can focus on the beginning of the dispute (as here), the dispute itself, or the resolution of a dispute (Isa 1:18). Apparently the complaint was lodged before the actual oath was taken.
49 Heb “concerning the matter of the well of water.”
50 The Hebrew verb used here means “to steal; to rob; to take violently.” The statement reflects Abraham’s perspective.

In other versions

When Abraham reproved Abimelech about a well of water that Abimelech’s servants had seized,

Then Abraham complained to Abimelek about a well of water that Abimelek’s servants had seized.

But Abraham complained to Abimelech because of the well that Abimelech’s servants had seized.

Then Abraham complained to Abimelech about a well that Abimelech’s servants had taken by force from Abraham’s servants.

Then Abraham complained to Abimelech on account of the well of water that servants of Abimelech had seized.

And Abraham reproved Abimelech because of a well of water, which Abimelech’s servants had violently taken away.

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