Шмуэль А 1:6 Комментарий: Rashi, Radak & Metzudat David

Her rival. Her husband's other wife, Penina.

Her rival (tzarah): Peninah, who was a tribulation (tzarah) to her. And likewise, all two wives [married] to the same man are called tribulations (tzarot), since they are generally each other's enemies. And likewise in the Mishnah (Yevamot 1), "exempt their tzarot."

And her rival would anger her: Peninah, her rival wife, would anger her with words.

Frequently anger. Anger after anger, i.e., always.' Therefore it is written 'also [גֵם] anger.' She would say to her, "Did you buy your older son a cloak today, or your younger son, a shirt?"

In order that she should complain. In order to make her complain. Our Rabbis explain, 'in order to make her storm,' that she pray. Penina had good intentions.¹¹ Maseches Bava Basra 16a.

Her womb. Lit., opposite her womb, and so is every expression of the word .¹²See Rashi, Bereishis 7:16.בְּעַד