198. At first, HE SHOULD PLACE HIMSELF as a servant that is to offer praises to his Master and sing for Him. That refers to the praises before the prayer service. Following this, HE SHOULD CONSIDER HIMSELF a servant after he finished saying his standing prayer. He is the servant who offers prayer to his Master. Following this, HE SHOULD CONSIDER HIMSELF a servant after he completed his entire prayer, and went his way. That is why David considered himself a servant three times in this prayer, as it is written: "O You, my Elohim, save Your servant" and "Rejoice the soul of Your servant." It is also written: "Give Your strength to Your servant" (Tehilim 86:16). We have here three occasions where one should consider oneself a servant. THAT IS BEFORE THE PRAYER, AFTER THE AMIDAH PRAYER AND AFTER THE WHOLE PRAYER SERVICE AS MENTIONED.
200. Then he must place himself in the place of the poor, since during the time when he enters and knocks at the doors of the most high up, when he finished saying 'true and certain,' and he has joined 'who has redeemed' to the Amidah prayer, he shall reach the Amidah prayer broken at heart, poor and destitute. And he shall place his will to be included among the poverty-stricken with a broken heart and humility of soul.
205. Rabbi Aba said, About this, it is written: "More to be desired are they than gold, even much fine gold..." (Tehilim 19:11). How sweet are the ancient teachings that the earlier generations have arranged. When we taste them, we are unable to eat them, MEANING WE DON'T UNDERSTAND THEM. It is definitely so. The scripture indicates three servants here. They are one in one place, the second is as you mentioned and the third is for the Holy One, blessed be He, to be adorned with, as it is written: "For to Me the children of Yisrael are servants; they are My servants" (Vayikra 25:55). THERE ARE TWO SERVANTS BEFORE THE PRAYER, AND AFTER THE AMIDAH PRAYER, IT IS WRITTEN: "They shall not be sold as bondsmen" (Ibid. 42), WHICH IS THE THIRD. The Holy One, blessed be He, needs to be adorned with this third SERVANT; therefore, they must not be sold for slavery, since he belongs to the Holy One, blessed be He.