The Sharia of Moses in the TORA
Part 1 - The 248 Positive Commandments of the Tora
83 - BRINGNING THE OFFERING IF THE FIRST FESTIVAL
According to the sages, the verse in question makes it a duty to bring all due offerings on the arrival of any one of the three festivals, and one who fails to do so thus violates a positive commandment. One who fails to bring his due offerings on the arrival of the third successive festival further violates the negative commandment in the verse; you shall not delay to pay it (Deuteronomy 23:21).