What is the ruling on the tasleemah count for funeral prayers, voluntary prayers, and prostration of recitation (Sujud al-Tilawah)?

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For the funeral prayer (Janazah), voluntary prayers (Nawafil), and the prostration of recitation (Sujud al-Tilawah), there is no doubt that exiting the act is achieved with a single tasleemah. This is supported by the view attributed to Imam Ahmad in one narration concerning Janazah and Sujud al-Tilawah. Evidence for this is found in the practice of the Companions, who reportedly offered only one tasleemah in the funeral prayer.