"And we we cried out to Hashem, the G-d of our ancestors, and Hashem heard our voice, and He saw our affliction, and our toil and our duress" (Deuteronomy 26:7).
"And we cried out to Hashem, the G-d of our ancestors" - As it is stated (Exodus 2:23); "And it was in those great days that the king of Egypt died and the Children of Israel sighed from the work and yelled out, and their supplication went up to G-d from the work."