מַ֭דּוּעַ קִדְּמ֣וּנִי בִרְכָּ֑יִם וּמַה־שָּׁ֝דַ֗יִם כִּ֣י אִינָֽק׃
אַלמַאי האָבן מיך קני צוגענומען?און נאָך װאָס בריסט, איך זאָל זײגן?
Rashi
Why did knees receive me Why did the knees of my mother receive me before my death?
Rashi
that I should suck [Why] was it decreed upon me to suck them? As he is speaking on the day of his birth, he mentions those subsequent events in the future tense.