What is Panchamī vibhakti

पंचमी विभक्ति or Ablative Case of the noun-form represents the "from whom/what/where" of the sentence
In other words ablative case represents the ablative of the sentence.

Let us look at the following sentences to understand this.

Panchamī Vibhakti sentences in Sanskrit

1. ईश्वर: नरान् दु:खात् रक्षति (God protects men from misery)
In this sentence, ईश्वर: is the subject, नरान् is the object and दु:खात् is the ablative in the sentence.

2. अहं विद्यालयात् आगच्छामि (I am coming from the school)
In the above sentence, अहं is the subject and विद्यालयात् is the ablative.

In sentence 1 above, if we ask the question, 'God protects from what?' the answer that we get is 'misery'.
In sentence 2 above, if we ask the question, 'where am I coming from?' the answer that we get is 'school'.
So, in general, answer to the question 'from whom/what/where' is the ablative of the sentence.

Examples of Panchamī Vibhakti in Sanskrit

Panchamī Vibhakti of Ram

विभक्ति	एकवचन	द्विवचन	बहुवचन
प्रथमा	रामात् / रामाद्	रामाभ्याम्	रामेभ्यः

Panchamī Vibhakti of Lataa

विभक्ति	एकवचन	द्विवचन	बहुवचन
प्रथमा	लतायाः	लताभ्याम्	लताभ्यः

Panchamī Vibhakti of Fal (Phal)

विभक्ति	एकवचन	द्विवचन	बहुवचन
प्रथमा	फलात्	फलाभ्याम्	फलेभ्यः