Tafsiran Kejadian 13:9: Rashi, Alshekh, Sforno & Radak

אם השמאל ואימינה IF THOU WILT TAKE THE LEFT HAND, THAN I WILL GO TO THE RIGHT —Wherever you settle down I will not go far from you and I will stand by you as a shield and as a helper. Ultimately, indeed, he (Lot) was really in need of him, as it is said, (Genesis 14:14) “And Abram heard that his brother was taken captive etc.”

Please separate from me. Separate from me physically, but do not separate yourself from my ways.

הלא כל הארץ לפניך, I’ll let you choose the area which you prefer.

ואימינה I WILL GO TO THE RIGHT — The word means “I will direct myself towards the right”, just as ואשמאילה means “I will direct myself towards the left.” If you say that it should be punctuated וְאַיְמִינָה (the regular Hiphil form) I answer that in another place also we find this form, (2 Samuel 14:19) אם יש לְהֵמִין “none can turn to the right hand”, where the punctuation is not לְהַיְמִין.