Just to clarify…the rosary, even if I pray it by myself, prayed in a church w the usual requirements = plenary indulgence?
And it doesn’t count if I pray it silently?
In the Manual of Indulgences (USCCB 2005), the requirements for the
plenary indulgence of the Marian rosary use the words “recite” and “vocal prayer”. Recite is audible according to the dictionary.
In the general norms we see that the deaf and mute are not bound to this in public or private (N26 below) [emphasis mine]. They are very specific here to detail the requirement of recitation, with an grant for the
deaf and mute to “recite the prayers mentally”.
N22. An indulgence attached to a prayer can be acquired by reciting the prayer in any language, provided that the translation is approved by the competent ecclesiastical authority.
N23. To gain an indulgence it is sufficient to recite the prayer alternately with a companion or to follow it mentally while it is being recited by another.
N26. Both the
deaf and the mute can gain indulgences attached to public prayers if, together with the other faithful praying in the same place, they devoutly raise their mind and affections to God; regarding private prayers it is sufficient
for them to recite the prayers mentally or express them with signs, or simply to read them without pronouncing the words.
You might have noticed from the Catechism that the emphasis is on the perfect form of prayer, 2703 states that “He also wants the external expression that associates the body with interior prayer, for it renders him that perfect homage which is his due.”
In a plenary indulgence we strive for a perfect expression, falling short we have a partial indulgence.