Prayer is the little implement — Prayer-Wheel

Prayer, apparatus, and fling, hint at prayer-wheel, "a mechanical aid to or substitute for prayer, used especially by the Buddhists of Tibet, consisting of a cylindrical box inscribed with or containing prayers, revolving on a spindle _{(OED 1)}."

Prayer is the little implement ¹
Through which Men reach
Where Presence－is denied them.
They fling their Speech

By means of it－in God's Ear－⁵
If then He hear－
This sums the Apparatus
Comprised in Prayer－

(F.623/J.437)

[1] Prayer:: a prayer wheel, prayer mill, or prayer machine. little:: inferior, little-minded.
[2, 3] reach where Presence, denied:: they pray for the next life.
[4] fling:: to revolve a prayer wheel.
[7, 8] Apparatus, Comprised in Prayer:: a device with prayers written

Such-like prayer-wheels, neatly wrought, are fastened upon short sticks to a small wooden pedestal, and stand upon the altars for the use of pious persons. While the prayer-wheel is thus turned round with one hand, the devotee takes the rosary in the other, and at the same time repeats penitential psalms. ─ The Universal Magazine of Knowledge and Pleasure (1814)