ثُمَّ يُجْلِسُهُ وَيُسْنِدُهُ إِلَيْهِ، وَيَمْسَحُ بَطْنَهُ مَسْحًا رَفِيقًا
Translation: Then seat and support the body, and gently pass the hand over its abdomen.
Yusniduhu ilayhi means physically supporting the body. Mas-han rafiqan expressly denotes gentle handling of the abdomen. The step concerns possible discharge during preparation, not forceful manipulation.